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<refentry xml:id="function.get-defined-constants" xmlns="http://docbook.org/ns/docbook">

<refnamediv>

<refname>get_defined_constants</refname>

<refpurpose>Devuelve la lista de constantes y sus valores</refpurpose>

</refnamediv>

<refsect1 role="description">

&reftitle.description;

<methodsynopsis>

<type>array</type><methodname>get_defined_constants</methodname>

<methodparam choice="opt"><type>bool</type><parameter>categorize</parameter><initializer>&false;</initializer></methodparam>

</methodsynopsis>

<para>

Devuelve los nombres y valores de las constantes ya definidas.

Esto incluye las constantes creadas por las extensiones, y aquellas

creadas con la función <function>define</function>.

</para>

</refsect1>

<refsect1 role="parameters">

&reftitle.parameters;

<para>

<variablelist>

<varlistentry>

<term><parameter>categorize</parameter></term>

<listitem>

<para>

Permite a esta función devolver un array multidimensional

con las categorías como claves de la primera dimensión y las constantes

junto con sus valores en la segunda dimensión.

<informalexample>

<programlisting role="php">

<![CDATA[

<?php

define("MY_CONSTANT", 1);

print_r(get_defined_constants(true));

?>

]]>

</programlisting>

&example.outputs.similar;

<screen>

<![CDATA[

Array

(

[Core] => Array

(

[E_ERROR] => 1

[E_WARNING] => 2

[E_PARSE] => 4

[E_NOTICE] => 8

[E_CORE_ERROR] => 16

[E_CORE_WARNING] => 32

[E_COMPILE_ERROR] => 64

[E_COMPILE_WARNING] => 128

[E_USER_ERROR] => 256

[E_USER_WARNING] => 512

[E_USER_NOTICE] => 1024

[E_ALL] => 2047

[TRUE] => 1

)

[pcre] => Array

(

[PREG_PATTERN_ORDER] => 1

[PREG_SET_ORDER] => 2

[PREG_OFFSET_CAPTURE] => 256

[PREG_SPLIT_NO_EMPTY] => 1

[PREG_SPLIT_DELIM_CAPTURE] => 2

[PREG_SPLIT_OFFSET_CAPTURE] => 4

[PREG_GREP_INVERT] => 1

)

[user] => Array

(

[MY_CONSTANT] => 1

)

)

]]>

</screen>

</informalexample>

</para>

</listitem>

</varlistentry>

</variablelist>

</para>

</refsect1>

<refsect1 role="returnvalues">

&reftitle.returnvalues;

<para>

Devuelve un array de constantes en el formato "nombre de la constante"

=> "valor de la constante", opcionalmente

agrupadas por el nombre de la extensión que registró la constante.

</para>

</refsect1>

<refsect1 role="examples">

&reftitle.examples;

<para>

<example>

<title>Ejemplo con <function>get_defined_constants</function></title>

<programlisting role="php">

<![CDATA[

<?php

print_r(get_defined_constants());

?>

]]>

</programlisting>

&example.outputs.similar;

<screen>

<![CDATA[

Array

(

[E_ERROR] => 1

[E_WARNING] => 2

[E_PARSE] => 4

[E_NOTICE] => 8

[E_CORE_ERROR] => 16

[E_CORE_WARNING] => 32

[E_COMPILE_ERROR] => 64

[E_COMPILE_WARNING] => 128

[E_USER_ERROR] => 256

[E_USER_WARNING] => 512

[E_USER_NOTICE] => 1024

[E_ALL] => 2047

[TRUE] => 1

)

]]>

</screen>

</example>

</para>

</refsect1>

<refsect1 role="seealso">

&reftitle.seealso;

<para>

<simplelist>

<member><function>defined</function></member>

<member><function>constant</function></member>

<member><function>get_loaded_extensions</function></member>

<member><function>get_defined_functions</function></member>

<member><function>get_defined_vars</function></member>

</simplelist>

</para>

</refsect1>

</refentry>

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